Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Vacuum Check Valve: Testing and Inspection
Vacuum Check Valve:
1.
Apply 16" vacuum (54 kPa) to the colored (vacuum) side of the valve.
2.
Vacuum should remain above 15" (50.6 kPa) for at least 10 seconds.
3.
Vacuum applied to the other side of the valve should leak in a free flow manner.
